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Add lock #185

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merged 4 commits into from
Jun 28, 2024
Merged

Add lock #185

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d58134e
Add a semaphore for serialize document update
humdrum Jun 21, 2024
942f7d6
Open isApplyingChangePack variable
humdrum Jun 21, 2024
beddde7
Revert add isApplyingChagePack variable
humdrum Jun 21, 2024
3ef0436
Add defer closure to signal semaphore.
humdrum Jun 28, 2024
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18 changes: 18 additions & 0 deletions Examples/Example.xcworkspace/xcshareddata/swiftpm/Package.resolved
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,24 @@
"version" : "1.1.0"
}
},
{
"identity" : "swift-docc-plugin",
"kind" : "remoteSourceControl",
"location" : "https://github.com/apple/swift-docc-plugin",
"state" : {
"revision" : "26ac5758409154cc448d7ab82389c520fa8a8247",
"version" : "1.3.0"
}
},
{
"identity" : "swift-docc-symbolkit",
"kind" : "remoteSourceControl",
"location" : "https://github.com/apple/swift-docc-symbolkit",
"state" : {
"revision" : "b45d1f2ed151d057b54504d653e0da5552844e34",
"version" : "1.0.0"
}
},
{
"identity" : "swift-log",
"kind" : "remoteSourceControl",
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21 changes: 18 additions & 3 deletions Sources/Document/Document.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@

import Combine
import Foundation
import Semaphore

/**
* `DocumentOptions` are the options to create a new document.
Expand Down Expand Up @@ -99,6 +100,8 @@ public actor Document {
*/
private var presences: [ActorID: StringValueTypeDictionary]

private let workSemaphore = AsyncSemaphore(value: 1)

public init(key: String) {
self.init(key: key, opts: DocumentOptions(disableGC: false))
}
Expand All @@ -120,7 +123,13 @@ public actor Document {
/**
* `update` executes the given updater to update this document.
*/
public func update(_ updater: (_ root: JSONObject, _ presence: inout Presence) throws -> Void, _ message: String? = nil) throws {
public func update(_ updater: (_ root: JSONObject, _ presence: inout Presence) async throws -> Void, _ message: String? = nil) async throws {
await self.workSemaphore.wait()

defer {
self.workSemaphore.signal()
}

guard self.status != .removed else {
throw YorkieError.documentRemoved(message: "\(self) is removed.")
}
Expand All @@ -141,7 +150,7 @@ public actor Document {

var presence = Presence(changeContext: context, presence: self.clone?.presences[actorID] ?? [:])

try updater(proxy, &presence)
try await updater(proxy, &presence)

self.clone?.presences[actorID] = presence.presence

Expand Down Expand Up @@ -250,7 +259,13 @@ public actor Document {
*
* - Parameter pack: change pack
*/
func applyChangePack(_ pack: ChangePack) throws {
func applyChangePack(_ pack: ChangePack) async throws {
await self.workSemaphore.wait()

defer {
self.workSemaphore.signal()
}

if let snapshot = pack.getSnapshot() {
try self.applySnapshot(pack.getCheckpoint().getServerSeq(), snapshot)
} else if pack.hasChanges() {
Expand Down